Tube beading or flanging machine



E. B. MINER.

TUBE BEAD |NG 0R FLANGING MACHINE.

Y APPLICATION msn 1AN.24.192|.

Patented J une 20, 1922.

2 SHEETS-SHEET 2.

TTURNEYS TENT GFFlClE'...A

EVERMONT BLEVINS MINR, OF PORTLAND, OREGON.

TUBE BEADING OR FLANG-ING MACHINE. y i

T 0 all whom t may concern.'

Be it known that l, EvERMoNT Biasi/INS,

at the end of the tube of a boiler when the` same is in position in the boiler, which is of simple and durable construction, reliable` in operation, and easy and inexpensive to manufacture and which enables the beading of the tube to be effectively carried out with a minimum expenditure of time, labor and skill.

Other objects and advantages of the inventionl reside in certain novel features of construction, combination and arrangement of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings forming part of this specification, and in which:

Figure 1 is a view in longitudinal section, parts being shown in elevation for the sake of illustration;

Figure 2 isa view in elevation, showing the preferred embodiment of the invention; Figure 3 is a transverse sectional view on line 3-3 of Figure 1; v l

Figure 4 is a sectional view on line 4--4 of Figure 1; f

-Figure 5 is a transverse sectional View on line 5 5 of Figure 1,'showing the parts in non-gripping position; I v

Figure 6 is a similarview, showing the parts in gripping position;

Figure 7 is a transverse sectional view ony line 7--7 of Figure 1';

Figure 8 is a transverse vertical sectional.

view on line 8-8 of Figure 1.

Referring to the drawings wherein for the sake of illustration is shown the lpreferred embodiment Vof the invention, the

numeral 10 designatesalrotatable shaft.

Gripping means is arranged on the shaft and comprises a mandrel 11 divided longi- Specification of Letters Patent. Patented June 20,v 1922 Application filed Ianuam7 251, 1921.

Serial No. 439,631.

tudinallyl and thus consisting of two sections, designated at 12 and 13. The sections of the'mandrel are retained on the shaft 10 against radial displacement by means of collars -141 and 14a integrally formed with the section 12 at the opposite ends thereof and loosely embracing the shaft 10 and collars 15 and 15a integrally formed with the section 13 at the opposite ends thereof and also loosely embracing the shaft 10, as clearly shown in Figure 1. These collars while permitting expansion of the sections of the mandrel and thus allowing radial movement within certain limits prevent such radial displacement as would disasseciate the sections of the mandrel from the shaftflO.

Means is provided for preventing longitudinal displacement of the sectionsof 'the mandrel and comprises an end plate 16 secured by nuts 17 to the one end of the shaft 10 and engageable with the portion of the section 12 of thermandrel, and an annular shoulder 18, preferably inte ally formed with the' shaft at a point adjacent ythe opposite end of the mandrel and engageable with a portion of the section 13 thereof. A

The sections 12Y and 13 ofthe mandrel are adapted to be expanded into gripping engagement with the wall orue or tube being beaded, and for this Vpurpose expandpanders 19, 20, 21 and 22, preferably inv the form of integral eccentric lugs carried by the shaft 10, and ,engageable with inwardly extending coacting lugs 23, 24, 25 andy 26 formed on the sections 12 and 13 of the mandrel. The eccentric lugs of the shaft, the ycoacting lugs of the mandrel, the col-l lars rwhich embrace the shaft to prevent thers this function as they slidably abut eachother and thus constrainl each other to the proper field of action. Moreover, these elements transmit the retaining ac-` tion of the plate 16 and the collar 18 to the opposite sections of the mandrel.

l A plurality of beading or Hanging rollers 30 are arranged on the" shaft at one end of the mandrel. These beading rollers are ing means is provided which consists of eX- ing' operation has been completed the shaft4 11 is reversely ,rotated to permit the sections i 33, respectively.

' facilitate its rotation.

to; form Vthe bead or flange. operation the feeding mechanism is utilized to advance the Working head as the formarotatably mounted on inclined pintles 31 which are journaled in a cage consisting of inner and outer concentric rings 32 and Each beading or fianging roller is tapered and comprises an inner frusto-conical portion an outer fru-stoconical portion 30 and a concave or reduced portion 30C formed by providing an annular groove in the roller intermediate the portions 30a and 30".

A' Working head 35 is rotatably and slidably arranged on the shaft 10 adjacent the beading rollers and has a working face 35at upon lwhich the rollers operatively bear. The Working face 35n is formed by a flange 35h extending laterally from the body portion of the Working head, and this Working face presents a relatively large smooth and inclined surface which completely supports the beading rollers as the frusto-conical. portions 30a and 30b both roll on the Working face. Handles 36 extending laterally from the body portion of the Working head and A thrust-collar 37 having a ball race 38 therein in which ball bearings 39 are operatively arranged, is also arranged upon the shaft 10 immediate to 'A andwithits ball bearings 39 engaging the Working head, as shown in Figure 1.

Feeding mechanism is provided and consists of a feeding block 40 having threading engagement With the threaded portion 1()n `of the shaft 10 and bearing against the thrust collar 37 and thus serving in conjunction with the thrust `collar to advance the ivorling head and the abut-ting rollers during the heading operation. Handles li1 project laterally from the block l() of the feed.- ing mechanism and facilitate turning of the rblock in feeding of the rollers.

ln operation the mandrel 11 is inserted in the tube to be beaded and the squared portion 29 of the shaft 10 is engaged by a suitable tool and rotated so that the eccentric lugs ofthe shaft cooperate with the lugs of the sections of the mandrel and expand these sections into gripping engagement with the ivall of the tube. The handles 41 of the feeding block are then grasped and the feeding block is turned to advance the Working K head and .the beading rollers until the beading rollers engage the tube. The handles 36 Of the Working head are' then utilized to turn vWorking head causes the beading rollers to operatel upon or svi/age the metal of the tube During this lvtionl of the bead progresses. After the bead- ."of the mandrel to collapse out of grippin Y, engagementwith the Wall :of the tube and l thefworkin'g head, and' this turning of the thus allow its ready Withdrawal therefrom.

l claim:

1. In a device yof the character described, a rotatable shaft, a mandrel arranged on said shaft consisting of sections, means for retaining said sections against radial displacement ivhile permitting expansive movement, means for retaining said sections against longitudinal displacement, means operable by said shaft for expanding said sections, beading rollers arranged on said shaft adjacent said mandrel, a cage for said rollers, a Working head arranged on said shaft and having a Workingface against 'which said rollers bear, means for rotating said working head, feeding mechanism comprising a rotatable block threaded on said shaft and means for rotating said block, and a thrust collar arranged on said shaft between said rotating block and said Working head. Y Y e e 2. In a device of thecharacter described, a shaft, a mandrel on said shaft consisting of sections, means for expanding said sections comprising eccentric lugs carried upon said shaft and cooperable with said sect-ions, .beading rollers arranged upon said shaft, a .Working head for said rollers arranged upon said shaft and feeding mechanism for ad-l ash aft, a mandrel associated with said shaft, Y

beading rollers operating on said Vshaft and each including 'an inner frusto-conical portion.` an outer frusto-conicaly portion and an intermediate reduced portion between said frusto-conical portion, a cage for said rollers comprising' concentric rings, pintles journaled in said rings and rotatably supporting said rollers, a Working head arranged upon lsaid shaft and including a body portion and a laterally extending flange, the laterally extending flange presenting a Working face having a relatively large smooth area and being inclined to completely engage the lateral surfaces presented by both of the frusto-conical portions of each of thel bead'-,

ing rollers', means for rotating said Working head, and feeding mechanism cooperating With said shaft for advancing said Working head of the beading rollers.V

nvnnMoNr BniivinsfMrNER. 

